Telephone-exchange system



June 30, 1925.

S. B. vwl-*L ldvfs ET AL TELEPHONE EXCHANGE SYSTEM Filed June 13, 1923 59 Sheets-Sht l MVM/0m 50W/W5 WMM/775 faf/ 5I gibson.

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June 30, 1925.

S. B. WILLIAMS ET AL TELEPHONE EXCHANGE SYS TEM Filed June 13, 1923 59 Sheets-Sheet 2 5am/ehi W//a/f/s MVM/afs' [af/ 5. 6MM/7.

June 30, 1925. 1543,96?

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TELEPHONE EXCHANGE SYSTEM I Filed June 13, 1925 59 sheets-sht 5 June B, T925.

S. B. WILLIAMS ET AL TELEPHONE EXCHANGE SYS TEM 5 9 Sheets-Shet 4 Filed June 13, 1925 June 30, 1925.

S. B. WILLIAMS ET AL TELEPHONE EXCHANGE SYSTEM Filed June l5, 1925 59 SheecS-She''b 5 June 3U, 1925. 1,543,957

s. B. WILLIAMS ET AL TELEPHONE EXCHANGE SYSTEM Filed June l5, 1925 59 Sheets-Sheet 6 June 30, 1925. 1,543,967

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TELEPHONE EXCHANGE SYS TEM ed June l5, l 59 Sheets-Sheet 7 i rujune E, E925. Y LSQB? s. E. WILJMS ET AL TELEPHONE E XCIANGE SYSTEM YFiled June 13, 1923 59 sheet @et a June 30, 1925. 1,543,967

s. B. WILLIAMS ET Al.

TELEPHONE EXCHANGE SYSTEM Filed June 13, 1925 59 SheetSShb 9 faz/77; faf/ 5. 6MM/7.

June 30, 1925. www? S. B. WILLIAMS ET Al. a v

TELEPHONE EXCHANGE SYSTEM Filed June 13, 1923 59 Sheets-Sheet l0 June 30 1925.

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S. B. WILLIAMS ET AL TELEPHONE EXCHANGE SYSTEM Filed June 15, 1923 59 Sheets-Sheet l2 June 30, l925. 11,543,967

S. B. WILLIAMS ET AL TELEPHONE EXCHANGE l SYSTEM Filed June 13, 1925 www;

June so, 1925 y 1,543,967 S. IB. WILLIAMS;` ET Ai..

TELEPHONE EXCHANGE SYSTEM Filed June 13, 192s vJune 3o, 1925.

. L543,967 s. B. WILLIAMS ET AL TELEPHONE EXCHANGE SYSTEM l Filed June I15, 1923 59 sheets-sht 15 www? June 30, 3&925.

s. B. WILLIAMS ET AL TELEPHONE EXCHANGE SYSTEM Filed June 13, 1923 59 sheets-sheet 1e June 30, 1925.. 1,543,967

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TELEPHONE EXCHANGE SYSTEM Filed June 15, 192s 59 sheets-sheet 1s June 3U, 19255,. 1,543,967

S. B. WILLIAMS ET AL TELEPHONE EXCHANGE SYSTEM Filed June 13, 1923 59 Sheets-Sht. 19

Jun@ 3U, 1925. 1l,543,967

S. B. WILLIAMS ET AL TELEPHONE EXCHANGE SYSTEM Filed June 13, 1925 l 59 Sheets-Sheet 2O 

